Updated sample app to support auth_time #937

Job	Run time
grab-pr-body	2s
app-check-api-token-tests	3m 40s
check-pr-body-for-key	4s
swift-button-functional-test	11m 58s
grab-pr-body	2s
swift-button-functional-test	22m 2s
check-pr-body-for-key	4s
app-check-api-token-tests	3m 40s
	41m 32s

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